What is the durability of a tire lever compared to a traditional tire iron for mountain biking, and do the benefits of levers in terms of reduced rim damage and ease of use outweigh the potential for them to break or wear out more quickly. Are there any specific brands or models of tire levers that have proven to be exceptionally durable, and are there any tips or tricks for extending the lifespan of a tire lever. For those who have used both levers and tire irons for mountain biking, do you find that one is significantly more reliable than the other, or are they more or less equal in terms of durability. Are there any specific scenarios or situations where one is more likely to fail than the other, and are there any common mistakes or misuses that can reduce the lifespan of a tire lever or tire iron.